ci: use correct tag value for release name

.github/workflows/release.yml

@@ -14,6 +14,9 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Set output vars
+        id: vars
+        run: echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
       - name: Setup Node (npm registry)
         uses: actions/setup-node@v2
         with:
@@ -31,7 +34,7 @@ jobs:
       - name: Create a GitHub release
         uses: ncipollo/release-action@v1
         with:
-          name: Release ${{ github.ref }}
+          name: Release ${{ steps.vars.outputs.tag }}
           body: |
             ${{ steps.changelog.outputs.changelog }}
           token: ${{ secrets.GITHUB_TOKEN }}